20312+5519 A  1678

 
 
20h 31m 11.01s +55 19' 14.9" P.A. 353 sep 2.4 mag 9.30,11.10 Sp B9 dist. 465.12 pc (1517.22 l.y.)
 
 
Coord 2000
20312+5519
Discov num
A  1678
Comp
Coord arcsec 2000
20 31 11.01 +55 19 14.9
Date first
1907
Date last
2002
Obs
9
Pa first
352
Pa last
353
P.A. Now (θ)
353°
Sep first
2.1
Sep last
2.4
Sep. Now (ρ)
2.4"
Mag pri
9.30
Mag sec
11.10
delta mag (ΔM)
1.8
Spectral class
B9 (blue-white)
Pri motion ra
-007
Sec motion ra
Pri motion dec
-029
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
352.5
Precise sep
2.43
Constellation
Cygnus
SAO
32648
HIP
101231
Tycho2
3954-00964-1
Gaia DR2
27472489088
HD
235264
BD
BD+54 2369
Distance
465.12
Distance ly
1517.22
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20312+5519 A 1678 2002 9 353 2.4 9.30 11.10 B9 D 203111.01+551914.9

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